Geometrical instruments – Gauge – Template
Patent
1984-12-17
1986-04-08
Stearns, Richard R.
Geometrical instruments
Gauge
Template
33478, B43L 706, B43L 1324
Patent
active
045803528
ABSTRACT:
A foldable template for laying out stairway stringers includes a plurality of step-defining members each having, in fixed relation, a tread-defining edge and a rise-defining edge and, for each pair of successive step-defining members, a corresponding intermediate member which is foldably attached to the respective successive step-defining members so that the step-defining and intermediate members of said template may be folded one upon another to form a compact stack. For use, the template is unfolded to provide, lengthwise, a number of step-defining members corresponding to the steps of a stringer. The template is then placed flat on a workpiece from which the stringer is to be cut, and the tread-defining and rise-defining edges are marked off on the workpiece which is thereafter cut along the marked off portions to yield the stringer.
REFERENCES:
patent: 134919 (1873-01-01), Moore
patent: 707307 (1902-08-01), Doyle
patent: 1277873 (1918-09-01), Crate
patent: 2494462 (1950-01-01), Van Winkle
patent: 2713203 (1955-07-01), Gottlieb
patent: 2879556 (1959-03-01), Lyons
patent: 3015164 (1962-01-01), Antell
patent: 3478434 (1969-11-01), Catalano
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